linux-kernel - [PATCH v5 1/4] drm/i915/gen9_bc: Recognize TGP PCH + CML combos

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Date:   Tue,  9 Feb 2021 16:28:28 -0500
From:   Lyude Paul <lyude@...hat.com>
To:     intel-gfx@...ts.freedesktop.org
Cc:     Matt Roper <matthew.d.roper@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Ville Syrjala <ville.syrjala@...ux.intel.com>,
        Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@...el.com>,
        Yijun Shen <Yijun.Shen@...l.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v5 1/4] drm/i915/gen9_bc: Recognize TGP PCH + CML combos

Since Intel has introduced the gen9_bc platform, a combination of
Tigerpoint PCHs and CML CPUs, let's recognize such platforms as valid and
avoid WARNing on them.

Changes since v4:
* Split this into it's own patch - vsyrjala

Cc: Matt Roper <matthew.d.roper@...el.com>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>
Cc: Ville Syrjala <ville.syrjala@...ux.intel.com>
[originally from Tejas's work]
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@...el.com>
Signed-off-by: Lyude Paul <lyude@...hat.com>
---
 drivers/gpu/drm/i915/intel_pch.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_pch.c b/drivers/gpu/drm/i915/intel_pch.c
index 4813207fc053..7476f0e063c6 100644
--- a/drivers/gpu/drm/i915/intel_pch.c
+++ b/drivers/gpu/drm/i915/intel_pch.c
@@ -121,7 +121,8 @@ intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
 	case INTEL_PCH_TGP2_DEVICE_ID_TYPE:
 		drm_dbg_kms(&dev_priv->drm, "Found Tiger Lake LP PCH\n");
 		drm_WARN_ON(&dev_priv->drm, !IS_TIGERLAKE(dev_priv) &&
-			    !IS_ROCKETLAKE(dev_priv));
+			    !IS_ROCKETLAKE(dev_priv) &&
+			    !IS_GEN9_BC(dev_priv));
 		return PCH_TGP;
 	case INTEL_PCH_JSP_DEVICE_ID_TYPE:
 	case INTEL_PCH_JSP2_DEVICE_ID_TYPE:
-- 
2.29.2